diff --git a/User/NG/.idea/editor.xml b/User/NG/.idea/editor.xml
index ec90224..25c6c37 100644
--- a/User/NG/.idea/editor.xml
+++ b/User/NG/.idea/editor.xml
@@ -243,5 +243,102 @@
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\ No newline at end of file
diff --git a/User/NG/CMakeLists.txt b/User/NG/CMakeLists.txt
index 9cddf7b..5b5bb14 100644
--- a/User/NG/CMakeLists.txt
+++ b/User/NG/CMakeLists.txt
@@ -10,5 +10,6 @@ add_executable(NG
main.c
NGCal.c
NGCal.h
- FlowCal.c # 确保包含实现文件
- Therm.c)
+ # 确保包含实现文件
+ Therm.c
+ FlowCal.c)
diff --git a/User/NG/Detail.c b/User/NG/Detail.c
index 0368cde..ac35710 100644
--- a/User/NG/Detail.c
+++ b/User/NG/Detail.c
@@ -1064,6 +1064,7 @@ double Detail_dZdD(Detail *pDetail, double d) {
temp = temp1 + temp2 + temp3;
pDetail->ddZdD += -pDetail->fx[16] + pDetail->fx[16] * temp;
pDetail->ddZdD += -pDetail->fx[17] + pDetail->fx[17] * temp;
+ temp = 4.0 * D1;
pDetail->ddZdD += pDetail->fx[18] * temp;
pDetail->ddZdD += pDetail->fx[19] * temp;
temp1 = -4.0 * D3 * exp2;
@@ -1106,6 +1107,7 @@ double Detail_dZdD(Detail *pDetail, double d) {
pDetail->ddZdD += pDetail->fx[34] * temp;
pDetail->ddZdD += pDetail->fx[35] * temp;
pDetail->ddZdD += pDetail->fx[36] * temp;
+ temp = 16.0 * D3;
pDetail->ddZdD += pDetail->fx[37] * temp;
pDetail->ddZdD += pDetail->fx[38] * temp;
temp1 = -4.0 * D5 * exp2;
diff --git a/User/NG/FlowCal.c b/User/NG/FlowCal.c
index d01cb68..c143513 100644
--- a/User/NG/FlowCal.c
+++ b/User/NG/FlowCal.c
@@ -1,3 +1,6 @@
+//
+// Created by ldeyu on 2025/7/7.
+//
#include "NGCal.h"
#include "FlowCal.h"
@@ -115,7 +118,7 @@ void OFlowCal(FlowParSTRUCT *ptFlowPar, NGParSTRUCT *ptNGPar) {
iter++;
if (iter > maxIter) {
- fprintf(stderr, "�������������������������\n");
+ fprintf(stderr, "δ\n");
}
} while (fabs(currentC - prevC) / currentC > tolerance);
@@ -149,22 +152,6 @@ void OFlowCal(FlowParSTRUCT *ptFlowPar, NGParSTRUCT *ptNGPar) {
double CaiLiaoPzxs(int tempCaiLiao) {
double CaiLiaoPzxs = 0;
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
switch (tempCaiLiao) {
case 0:
CaiLiaoPzxs = 11.75;
@@ -267,7 +254,7 @@ double calculateK(int dPipeType) {
break;
default:
- fprintf(stderr, "δ֪�Ĺܵ�����: %d\n", dPipeType);
+ fprintf(stderr, "δ֪Ĺܵ: %d\n", dPipeType);
return FLOW_CALC_ERROR;
}
return Jdccd;
@@ -287,7 +274,7 @@ double calculateRoughnessFactor(double D_pipe, double K, double C) {
double term = (K_over_D * 1e6) - 400;
if (term < 0) {
- fprintf(stderr, "K/D ����������ʽ���÷�Χ\n");
+ fprintf(stderr, "K/D <20><>ʽ÷Χ\n");
return FLOW_CALC_ERROR;
}
@@ -350,7 +337,7 @@ double calculateCd(double beta, double ReD, double D_mm, int ptMode) {
L2 = 0.47;
break;
default:
- fprintf(stderr, "��֧�ֵ�ȡѹ��ʽ: %d\n", ptMode);
+ fprintf(stderr, "ֵ֧ȡѹʽ: %d\n", ptMode);
return FLOW_CALC_ERROR;
}
diff --git a/User/NG/OFlowCal.c b/User/NG/OFlowCal.c
deleted file mode 100644
index 042241a..0000000
--- a/User/NG/OFlowCal.c
+++ /dev/null
@@ -1,329 +0,0 @@
-#include "NGCal.h"
-#include "Therm.h"
-#include "Detail.h"
-#include "FlowCal.h"
-#include "math.h"
-void OFlowCal(FlowParSTRUCT * ptFlowPar,NGParSTRUCT * ptNGPar)
-{
- double tempPatm = ptFlowPar->dPatm*1000000;
- double tempPf = ptFlowPar->dPf*1000000;
- double tempDP = ptFlowPar->dDp*1000;
- double tempTf = ptFlowPar->dTf+273.15;
- if (ptFlowPar->dPfType == 0)
- {
- ptFlowPar->dPf = tempPatm + tempPf;
- ptNGPar ->dPf=tempPatm + tempPf;
- } else {
- ptFlowPar->dPf = tempPf;
- ptNGPar->dPf=tempPf;
- }
- ptFlowPar->dDp = tempDP;
- ptFlowPar->dTf = tempTf;
- ptNGPar->dTf = tempTf;
- ptNGPar->dCbtj=ptFlowPar->dCbtj;
- switch (ptNGPar->dCbtj)
- {
- case 2:
- ptNGPar->dPb=101325;
- ptNGPar->dTb= 273.15;
- ptFlowPar->dPb_M=(101325);
- ptFlowPar->dTb_M=(273.15);
- break;
- case 1:
- ptNGPar->dPb=(101325);
- ptNGPar->dTb=( 288.15);
- ptFlowPar->dPb_M=(101325);
- ptFlowPar->dTb_M=(288.15);
- break;
- case 0:
- ptNGPar->dPb=(101325);
- ptNGPar->dTb=( 293.15);
- ptFlowPar->dPb_M=(101325);
- ptFlowPar->dTb_M=(293.15);
- break;
- }
- double ngArray[NUMBEROFCOMPONENTS];
- for (int i = 0; i dNG_Compents[i] / 100;
- ptNGPar->adMixture[i] = ngArray[i];
- }
- Crit(ptNGPar,0);
- ptFlowPar->dFpv=ptNGPar->dFpv;
- ptFlowPar->dOrificeD = ptFlowPar->dOrificeD * (1 + 0.000001 * CaiLiaoPzxs(ptFlowPar->dOrificeMaterial) * (ptFlowPar->dTf - 293.15));
- ptFlowPar->dPipeD = ptFlowPar->dPipeD * (1 + 0.000001 * CaiLiaoPzxs(ptFlowPar->dPipeMaterial) * (ptFlowPar->dTf - 293.15));
- ptFlowPar->dBeta = ptFlowPar->dOrificeD / ptFlowPar->dPipeD;
- ptFlowPar->dE = calculateE(ptFlowPar->dBeta);
- ptFlowPar->dFG = calculateFG(ptNGPar->dRD_Real);
- ptFlowPar->dFT = calculateFT(ptFlowPar->dTb_M, ptFlowPar->dTf);
- ptFlowPar->dKappa = calculateKappa(ptNGPar->dZf);
- ptFlowPar->dDViscosity = Dlndjs(ptFlowPar->dPf/1e6, ptFlowPar->dTf);
- ptFlowPar->dDExpCoefficient = calculateEpsilon(ptFlowPar->dPf, ptFlowPar->dDp,
- ptFlowPar->dBeta, ptFlowPar->dKappa);
- double D = ptFlowPar->dPipeD / 1000.0;
- double d = ptFlowPar->dOrificeD / 1000.0;
- double beta = ptFlowPar->dBeta;
- double P1 = ptFlowPar->dPf;
- double deltaP = ptFlowPar->dDp;
- double Tf = ptFlowPar->dTf;
- double C_initial = 0.6;
- double Qf_initial = (C_initial * ptFlowPar->dE * ptFlowPar->dDExpCoefficient * M_PI * pow(d, 2) / 4)
- * sqrt(2 * deltaP / (ptNGPar->dRhof * (1 - pow(beta, 4))));
- ptFlowPar->dVFlowf = Qf_initial;
- double tolerance = 1e-6;
- int maxIter = 100;
- double currentC = C_initial;
- double currentReD = calculateReD(Qf_initial, D, ptNGPar->dRhof, ptFlowPar->dDViscosity);
- int iter = 0;
- double prevC = 0;
- do {
- prevC = currentC;
- currentC = calculateCd(beta, currentReD, ptFlowPar->dPipeD, ptFlowPar->dPtmode);
- double Qf = (currentC * ptFlowPar->dDExpCoefficient * M_PI * pow(d, 2) / 4)
- * sqrt(2 * deltaP / (ptNGPar->dRhof * (1 - pow(beta, 4))));
- ptFlowPar->dVFlowf = Qf;
- currentReD = calculateReD(Qf, D, ptNGPar->dRhof, ptFlowPar->dDViscosity);
- iter++;
- if (iter > maxIter) {
- fprintf(stderr, "�������������������������\n");
- }
- } while (fabs(currentC - prevC) / currentC > tolerance);
- double K = calculateK(ptFlowPar->dPipeType);
- double G_me = calculateRoughnessFactor(ptFlowPar->dPipeD, K, currentC);
- double C_corrected = currentC * G_me;
- ptFlowPar->dCd = C_corrected;
- ptFlowPar->dRoughNessPipe = G_me;
- ptFlowPar->dRnPipe = currentReD;
- double Qn = ptFlowPar->dVFlowf * (ptFlowPar->dFpv * ptFlowPar->dFpv * P1 / ptFlowPar->dPb_M)
- * (ptFlowPar->dTb_M) / Tf;
- ptFlowPar->dVFlowb = Qn;
- ptFlowPar->dMFlowb = ptFlowPar->dVFlowb * ptNGPar->dRhob;
- ptFlowPar->dEFlowb = ptFlowPar->dVFlowb * ptNGPar->dHhvMol;
- ptFlowPar->dVelocityFlow = ptFlowPar->dVFlowf / (M_PI * pow((ptFlowPar->dPipeD / 2000), 2));
-}
- double CaiLiaoPzxs(int tempCaiLiao)
-{
- double CaiLiaoPzxs = 0;
- switch (tempCaiLiao)
- {
- case 0:
- CaiLiaoPzxs = 11.75;
- break;
- case 1:
- CaiLiaoPzxs = 11.6;
- break;
- case 2:
- CaiLiaoPzxs = 11.16;
- break;
- case 3:
- CaiLiaoPzxs = 11.59;
- break;
- case 4:
- CaiLiaoPzxs = 10.5;
- break;
- case 5:
- CaiLiaoPzxs = 10.0;
- break;
- case 6:
- CaiLiaoPzxs = 10.2;
- break;
- case 7:
- CaiLiaoPzxs = 15.5;
- break;
- case 8:
- CaiLiaoPzxs = 11.5;
- break;
- case 9:
- CaiLiaoPzxs = 10.8;
- break;
- case 10:
- CaiLiaoPzxs = 16.6;
- break;
- case 11:
- CaiLiaoPzxs = 11.4;
- break;
- case 12:
- CaiLiaoPzxs = 16.55;
- break;
- case 13:
- CaiLiaoPzxs = 17.8;
- break;
- case 14:
- CaiLiaoPzxs = 17.2;
- break;
- }
- return CaiLiaoPzxs;
-}
-
-double calculateK(int dPipeType) {
- double Jdccd;
- switch (dPipeType) {
- case 0:
- Jdccd = 0.029;
- break;
- case 1:
- case 2:
- case 3:
- Jdccd = 0.075;
- break;
- case 4:
- Jdccd = 0.1;
- break;
- case 5:
- Jdccd = 0.15;
- break;
- case 6:
- Jdccd = 1;
- break;
- case 7:
- Jdccd = 2.1;
- break;
- case 8:
- Jdccd = 0.04;
- break;
- case 9:
- Jdccd = 0.15;
- break;
- case 10:
- Jdccd = 0.13;
- break;
- case 11:
- Jdccd = 0.25;
- break;
- default:
- fprintf(stderr, "δ֪�Ĺܵ�����: %d\n", dPipeType);
- return FLOW_CALC_ERROR;
- }
- return Jdccd;
-}
-
-double calculateRoughnessFactor(double D_pipe, double K, double C) {
- double K_over_D = K / D_pipe;
- if (K_over_D <= 0.0004) {
- return 1.0000;
- }
- double term = (K_over_D * 1e6) - 400;
- if (term < 0) {
- fprintf(stderr, "K/D ����������ʽ���÷�Χ\n");
- return FLOW_CALC_ERROR;
- }
- double G_me = 1 + (0.011 / C) * sqrt(term);
- return G_me;
-}
-
-double calculateE(double beta) {
- return 1 / sqrt(1 - pow(beta, 4));
-}
-
-double calculateFG(double dRD_Real) {
- return 1 / sqrt(dRD_Real);
-}
-
-double calculateFT(double dTb_M, double dTf) {
- return sqrt(dTb_M / dTf);
-}
-
-double calculateEpsilon(double dPf, double dDp, double beta, double dKappa) {
- double tau = (dPf - dDp) / dPf;
- double epsilon = 1 - (0.351 + 0.256 * pow(beta, 4) + 0.93 * pow(beta, 8)) * (1 - pow(tau, 1/dKappa));
- return epsilon;
-}
-
-double calculateKappa(double dZf) {
- double gamma = 1.3;
- double Z = dZf;
- double kappa = gamma / (1 - (gamma - 1) * (1 / Z - 1));
- return kappa;
-}
-
-double calculateReD(double Qf, double D, double rho, double mu) {
- return (4 * Qf * rho) / (M_PI * D * mu);
-}
-
-double calculateCd(double beta, double ReD, double D_mm, int ptMode) {
- double L1, L2;
- switch (ptMode) {
- case 1:
- L1 = L2 = 0;
- break;
- case 0:
- L1 = L2 = 25.4 / D_mm;
- break;
- case 2:
- L1 = 1.0;
- L2 = 0.47;
- break;
- default:
- fprintf(stderr, "��֧�ֵ�ȡѹ��ʽ: %d\n", ptMode);
- return FLOW_CALC_ERROR;
- }
- double term1 = 0.5961 + 0.0261 * pow(beta, 2) - 0.216 * pow(beta, 8);
- double term2 = 0.000521 * pow(1e6 * beta / ReD, 0.7);
- double A = pow(19000 * beta / ReD, 0.8);
- double term3 = (0.0188 + 0.0063 * A) * pow(beta, 3.5) * pow(1e6 / ReD, 0.3);
- double term4 = (0.043 + 0.08 * exp(-10 * L1) - 0.123 * exp(-7 * L1))
- * (1 - 0.11 * A) * pow(beta, 4) / (1 - pow(beta, 4));
- double term5 = -0.031 * (2 * L2 / (1 - beta) - 0.8 * pow(2 * L2 / (1 - beta), 1.1))
- * pow(beta, 1.3);
- double Cd = term1 + term2 + term3 + term4 + term5;
- if (D_mm < 71.12) {
- Cd += 0.011 * (0.75 - beta) * (2.8 - D_mm / 25.4);
- }
- return Cd;
-}
-
-double Dlndjs(double tempP_jy, double tempT) {
- double Dlndjs_Dlnd_Data[8][11] = {
- {976, 991, 1014, 1044, 1073, 1114, 1156, 1207, 1261, 1331, 1405},
- {1027, 1040, 1063, 1091, 1118, 1151, 1185, 1230, 1276, 1331, 1389},
- {1071, 1082, 1106, 1127, 1149, 1180, 1211, 1250, 1289, 1335, 1383},
- {1123, 1135, 1153, 1174, 1195, 1224, 1253, 1289, 1324, 1366, 1409},
- {1167, 1178, 1196, 1216, 1236, 1261, 1287, 1318, 1350, 1385, 1421},
- {1213, 1224, 1239, 1257, 1275, 1297, 1320, 1346, 1373, 1403, 1435},
- {1260, 1270, 1281, 1297, 1313, 1333, 1352, 1374, 1396, 1424, 1451},
- {1303, 1312, 1323, 1338, 1352, 1372, 1391, 1412, 1432, 1456, 1482}
- };
- double Dlndjs_Dlnd_T[8] = {
- -15 + 273.15, 0 + 273.15, 15 + 273.15, 30 + 273.15,
- 45 + 273.15, 60 + 273.15, 75 + 273.15, 90 + 273.15
- };
- double Dlndjs_Dlnd_P[11] = {0.1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
- double s1, s2, ky, kx;
- int i, m = 0, n = 0;
- if (tempT < Dlndjs_Dlnd_T[0]) {
- tempT = Dlndjs_Dlnd_T[0];
- }
- if (tempT > Dlndjs_Dlnd_T[7]) {
- tempT = Dlndjs_Dlnd_T[7];
- }
- if (tempP_jy < Dlndjs_Dlnd_P[0]) {
- tempP_jy = Dlndjs_Dlnd_P[0];
- }
- if (tempP_jy > Dlndjs_Dlnd_P[10]) {
- tempP_jy = Dlndjs_Dlnd_P[10];
- }
- for (i = 0; i <= 6; i++) {
- if (tempT >= Dlndjs_Dlnd_T[i] && tempT <= Dlndjs_Dlnd_T[i + 1]) {
- m = i;
- break;
- }
- }
- for (i = 0; i <= 9; i++) {
- if (tempP_jy >= Dlndjs_Dlnd_P[i] && tempP_jy <= Dlndjs_Dlnd_P[i + 1]) {
- n = i;
- break;
- }
- }
- if (Dlndjs_Dlnd_P[n + 1] - Dlndjs_Dlnd_P[n] != 0) {
- ky = (tempP_jy - Dlndjs_Dlnd_P[n]) / (Dlndjs_Dlnd_P[n + 1] - Dlndjs_Dlnd_P[n]);
- } else {
- ky = 0;
- }
- if (Dlndjs_Dlnd_T[m + 1] - Dlndjs_Dlnd_T[m] != 0) {
- kx = (tempT - Dlndjs_Dlnd_T[m]) / (Dlndjs_Dlnd_T[m + 1] - Dlndjs_Dlnd_T[m]);
- } else {
- kx = 0;
- }
- s1 = Dlndjs_Dlnd_Data[m][n] + (Dlndjs_Dlnd_Data[m][n + 1] - Dlndjs_Dlnd_Data[m][n]) * ky;
- s2 = Dlndjs_Dlnd_Data[m + 1][n] + (Dlndjs_Dlnd_Data[m + 1][n + 1] - Dlndjs_Dlnd_Data[m + 1][n]) * ky;
- return (s1 + (s2 - s1) * kx) / 100000.0;
-}
diff --git a/User/NG/Therm.c b/User/NG/Therm.c
index f4875a5..dc00f05 100644
--- a/User/NG/Therm.c
+++ b/User/NG/Therm.c
@@ -118,7 +118,8 @@ double Therm_CpiMolar(Therm *therm, NGParSTRUCT *ptNGPar) {
cp += Cpx;
}
}
- return cp * therm->CAL_TH;
+ cp *= therm->CAL_TH;
+ return cp;
}
@@ -206,14 +207,12 @@ void Therm_CprCvrHS(Therm *therm, NGParSTRUCT *ptNGPar, Detail *detail) {
double Hinc = 0.0;
double Sinc = 0.0;
double Smixing = 0.0;
- double Cp = Therm_CpiMolar(therm, ptNGPar);
- double Si;
+ double Si;
+ double Cp = Therm_CpiMolar(therm, ptNGPar);
ptNGPar->dHo = Therm_Ho(therm, ptNGPar);
Si = Therm_So(therm, ptNGPar);
-
ptNGPar->dCpi = (Cp * 1000.0) / ptNGPar->dMrx;
-
for (int i = 0; i < therm->GK_points; i++) {
double x = ptNGPar->dDf * (1.0 + therm->GK_root[i]) / 2.0;
Detail_zdetail(detail, x);
@@ -301,30 +300,21 @@ void Therm_HS_Mode(Therm *therm, NGParSTRUCT *ptNGPar, Detail *detail, double H,
ptNGPar->dPf = p2;
Detail_Run(detail, ptNGPar);
double s2 = Therm_S(therm, ptNGPar, detail) - s0;
-
delta2 = fabs(s1 - s2) / s0;
if (delta2 < tolerance) break;
-
double p0 = p2;
p2 = (p1 * s2 - p2 * s1) / (s2 - s1);
-
if (p2 <= pmin) p2 = pmin;
if (p2 >= pmax) p2 = pmax;
-
p1 = p0;
s1 = s2;
}
-
if (ptNGPar->lStatus == MAX_NUM_OF_ITERATIONS_EXCEEDED) break;
-
double h2 = Therm_H(therm, ptNGPar, detail) - h0;
delta1 = fabs(h1 - h2) / h0;
-
if (delta1 < tolerance && i > 0) break;
-
double t0 = t2;
t2 = (t1 * h2 - t2 * h1) / (h2 - h1);
-
if (t2 >= tmax) t2 = tmax;
if (t2 <= tmin) {
t2 = t0 + 10.0;
@@ -352,10 +342,8 @@ double Therm_H(Therm *therm, NGParSTRUCT *ptNGPar, Detail *detail) {
Detail_zdetail(detail, x);
Detail_dZdT(detail, x);
Detail_d2ZdT2(detail, x);
-
Hinc += therm->GK_weight[i] * detail->ddZdT / x;
if (i == 10) break;
-
x = ptNGPar->dDf * (1.0 - therm->GK_root[i]) / 2.0;
Detail_zdetail(detail, x);
Detail_dZdT(detail, x);
diff --git a/User/NG/main.c b/User/NG/main.c
index d7931ba..e5eef4a 100644
--- a/User/NG/main.c
+++ b/User/NG/main.c
@@ -8,7 +8,7 @@ int main() {
NGParSTRUCT ngParams = {0};
// 设置基本参数
- flowParams.dPatm = 0.0; // 标准大气压(bar)
+ flowParams.dPatm = 0.0981; // 标准大气压(bar)
flowParams.dPf = 4; // 压力(MPa)
flowParams.dPfType = 1; // 0=表压，1=绝压
flowParams.dDp = 12.50; // 差压(kPa)
@@ -42,10 +42,10 @@ int main() {
flowParams.dNG_Compents[7] = 0.0; // 氢气(H2)
flowParams.dNG_Compents[8] = 0.00; // 一氧化碳(CO)
flowParams.dNG_Compents[9] = 0.00; // 氧气(O2)
- flowParams.dNG_Compents[10] = 0.1563; // 异丁烷(i-C4H10)
- flowParams.dNG_Compents[11] = 0.1037; // 正丁烷(n-C4H10)
- flowParams.dNG_Compents[12] = 0.0443; // 异戊烷(i-C5H12)
- flowParams.dNG_Compents[13] = 0.0324; // 正戊烷(n-C5H12)
+ flowParams.dNG_Compents[10] = 0.1037; // 异丁烷(i-C4H10)
+ flowParams.dNG_Compents[11] = 0.1563; // 正丁烷(n-C4H10)
+ flowParams.dNG_Compents[12] = 0.0321; // 异戊烷(i-C5H12)
+ flowParams.dNG_Compents[13] = 0.0443; // 正戊烷(n-C5H12)
flowParams.dNG_Compents[14] = 0.0393; // 己烷(C6H14)
flowParams.dNG_Compents[15] = 0.0; // 庚烷(C7H16)
flowParams.dNG_Compents[16] = 0.0; // 辛烷(C8H18)
@@ -67,7 +67,7 @@ int main() {
// flowParams.dNG_Compents[10]= 0.1; // 异丁烷(i-C4H10)
// flowParams.dNG_Compents[11]= 0.1; // 正丁烷(n-C4H10)
// flowParams.dNG_Compents[12]= 0.05; // 异戊烷(i-C5H12)
- // flowParams.dNG_Compents[13]= 0.05; // 正戊烷(n-C5H12)
+ // flowParams.dNG_Compents[13]= 0.03; // 正戊烷(n-C5H12)
// flowParams.dNG_Compents[14]= 0.07; // 己烷(C6H14)
// flowParams.dNG_Compents[15]= 0; // 庚烷(C7H16)
// flowParams.dNG_Compents[16]= 0; // 辛烷(C8H18)
@@ -86,7 +86,7 @@ int main() {
OFlowCal(&flowParams, &ngParams);
// 打印计算结果
- printf("工况条件信息:\n");
+ printf("工况条件信息:\n");
printf("标准参比条件: %d\n", flowParams.dCbtj);
printf("计量参比压力: %.2f\n", flowParams.dPb_M);
printf("计量参比温度: %.2f\n", flowParams.dTb_M);